Statistical Analysis of a Weibull Extension with Bathtub-Shaped Failure Rate Function

Table 3

95% confidence interval for in 1000 simulations by Wu’s exact.

			Average	Average	Average	Coverage
			Lower limit	Upper limit	Interval width	Probability
10	8	3	0.4016	2.6205	2.2189	0.956
		4	0.3626	2.7726	2.4100	0.951
		5	0.3293	3.3279	2.9986	0.961
	9	3	0.4493	2.3191	1.8699	0.953
		4	0.4183	2.3419	1.9237	0,951
		5	0.4190	2.7233	2.3043	0.942
15	13	3	0.5218	2.0465	1.5247	0.951
		4	0.5113	2.0149	1.5036	0.946
		5	0.5113	2.0591	1.5478	0.945
	14	3	0.5350	1.9170	1.3820	0.951
		4	0.5267	1.8683	1.3415	0.956
		5	0.5238	1.8768	1.3530	0.968
20	16	4	0.5443	1.9095	1.3652	0.951
		5	0.5324	1.8901	1.3577	0.956
		6	0.5350	1.9469	1.4120	0.954
		7	0.5248	1.9774	1.4526	0.954
	17	4	0.5576	1.8412	1.2836	0.955
		5	0.5490	1.8199	1.2709	0.951
		6	0.5599	1.8739	1.3140	0.953
		7	0.5420	1.8670	1.3250	0.962
	18	5	0.5759	1.7837	1.2078	0.945
		6	0.5658	1.7607	1.1948	0.956
		7	0.5673	1.7889	1.2216	0.943
		8	0.5615	1.8075	1.2460	0.957
25	20	5	0.5833	1.7904	1.2071	0.951
		6	0.5726	1.7644	1.1918	0.942
		7	0.5838	1.8197	1.2359	0.951
		8	0.5695	1.8198	1.2503	0.962
	21	6	0.5934	1.7386	1.1452	0.944
		7	0.5854	1.7279	1.1425	0.946
		8	0.5749	1.7237	1.1488	0.950
		9	0.5810	1.7754	1.1944	0.951
	22	6	0.6034	1.6876	1.0842	0.951
		7	0.5974	1.6753	1.0779	0.949
		8	0.5910	1.6730	1.0820	0.949
		9	0.5925	1.6984	1.1060	0.947
30	25	7	0.6201	1.6580	1.0378	0.952
		8	0.6097	1.6447	1.0350	0.946
		9	0.6080	1.6520	1.0439	0.950
		10	0.6084	1.6730	1.0646	0.954
	26	7	0.6301	1.6321	1.0020	0.944
		8	0.6219	1.6100	0.9881	0.951
		9	0.6193	1.6158	0.9965	0.946
		10	0.6166	1.6181	1.0016	0.958
	27	8	0.6389	1.5909	0.9520	0.945
		9	0.6303	1.5768	0.9465	0.955
		10	0.6324	1.5931	0.9607	0.948
		11	0.6298	1.5955	0.9657	0.947